Suppose that a study were done on married couple in a small town. We learned that...
Suppose that a study were done on married couple in a small town. We learned that one person in each couple is always exactly 7% shorter than their partner. What would the correlation between the heights of the married couple be?
Homework Answers
Since one person in each couple is always exactly 7% shorter than their partner, the height of one can be perfectly modeled by the height of other and hence, there would be perfect positive correlation. Hence,
Correlation = +1
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Suppose that a study were done on married couple in a small
town. We learned that...
Suppose that a study was done on a married couple in a small town. We learned...
Suppose that a study was done on a married couple in a small town. We learned that one person in each couple is always exactly 7% shorter than their partner. What would the correlation between the heights of the married couple be?
do not need question4 3. Suppose men always married women who were exactly 8% shorter. What...
do
not need question4
3. Suppose men always married women who were exactly 8% shorter. What would the correlation between their heights be? 4. Is the correlation between the heights of husbands and wives in the U.S. around -0.9,-0.3, 0.3, or 0.9? Explain briefly. 5. Three data sets are collected, and the correlation coefficient is computed in each case. The variables are (i) grade point average in freshman year and in sophomore year (ii) grade point average in freshman year...
Suppose that the observational units in a study are opposite-sex couples married in CA in 2016....
Suppose that the observational units in a study are opposite-sex couples married in CA in 2016. For each of the following, indicate whether it can legitimately be considered (1) a categorical variable, (2) a quantitative variable, (3) a statistic, or (4) none of the above. Explain each choice briefly. a. The percent of couples in which the woman is older than the man. b. The average age (of the husband and the wife). c. Age difference (between the husband and...
A married couple filing jointly with a taxable income of $295,000 and a $6000 tax credit...
A married couple filing jointly with a taxable income of
$295,000 and a $6000 tax credit
The tax code is
mathxl.com mat142 26758 Test: Module 6A Test This Question: 1 pt 9 of 20 (17 complete) Use the 2016 marginal tax rates to compute the tax owed by the following couple. A married couple filing jointly with a taxable income of $295,000 and a $6000 tax credit Click the icon to view the 2016 marginal tax rates. The tax owed...
In a study of married women without a child, two groups (women married less than two...
In a study of married women without a child, two groups (women married less than two years and women married for five years) were selected at random and each woman was asked if she eventually planned to have a child. Suppose 225 of the 300 women married less than two years planned to have children someday compared to 306 of the 450 women married for five years. Can we conclude that the proportion of wives who planned to have children...
According to a study done by UCB students, the height for Martian adult males is normally...
According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 67 inches and a standard deviation of 2.3 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(,) b. Find the probability that the person is between 62.1 and 65.3 inches. c. The middle...
According to a study done by UCB students, the height for Martian adult males is normally...
According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 68 inches and a standard deviation of 2.5 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 3 decimal places where possible. a. What is the distribution of X? X ~ N(_____ , _____) b. Find the probability that the person is between 67.7 and 70.3 inches. _____...
Question 3 According to a study done by UCB students, the height for Martian adult males...
Question 3 According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 65 inches and a standard deviation of 2.4 inches. Suppose one Martian adult male is randomly chosen. Let X-height of the individual. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N b. Find the probability that the person is between 60.7 and 64.7 inches. C. The middle 20% of...
Part 1: Read each research question and study design. Then, answer these questions A) First, is...
Part 1: Read each research question and study design. Then, answer these questions A) First, is the study correlational or experimental? Check the box for the correct study design. B) Second, if the study is correlational, what are the two variables being measured? Alternatively, if the study is experimental, what are the independent and dependent **Your answer to question B depends on how you answered question A*** 3) Are people more likely to comply with a strange request than a...
According to a study done by UCB students, the height for Martian adult males is normally...
According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where appropriate. a. What is the distribution of X? X ~ N(,) b. Find the probability that the person is between 63.5 and 69 inches. c. The middle...
do
not need question4
3. Suppose men always married women who were exactly 8% shorter. What would the correlation between their heights be? 4. Is the correlation between the heights of husbands and wives in the U.S. around -0.9,-0.3, 0.3, or 0.9? Explain briefly. 5. Three data sets are collected, and the correlation coefficient is computed in each case. The variables are (i) grade point average in freshman year and in sophomore year (ii) grade point average in freshman year...
A married couple filing jointly with a taxable income of
$295,000 and a $6000 tax credit
The tax code is
mathxl.com mat142 26758 Test: Module 6A Test This Question: 1 pt 9 of 20 (17 complete) Use the 2016 marginal tax rates to compute the tax owed by the following couple. A married couple filing jointly with a taxable income of $295,000 and a $6000 tax credit Click the icon to view the 2016 marginal tax rates. The tax owed...
In a study of married women without a child, two groups (women married less than two years and women married for five years) were selected at random and each woman was asked if she eventually planned to have a child. Suppose 225 of the 300 women married less than two years planned to have children someday compared to 306 of the 450 women married for five years. Can we conclude that the proportion of wives who planned to have children...
Question 3 According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 65 inches and a standard deviation of 2.4 inches. Suppose one Martian adult male is randomly chosen. Let X-height of the individual. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N b. Find the probability that the person is between 60.7 and 64.7 inches. C. The middle 20% of...
Part 1: Read each research question and study design. Then, answer these questions A) First, is the study correlational or experimental? Check the box for the correct study design. B) Second, if the study is correlational, what are the two variables being measured? Alternatively, if the study is experimental, what are the independent and dependent **Your answer to question B depends on how you answered question A*** 3) Are people more likely to comply with a strange request than a...
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